PURPOSE: To obtain an adsorbing and decomposing agent of gas in which offensive odor and harmful gas, etc., are adsorbed and removed and these are oxidized and reduced at a time of heating and regeneration and made to harmless gas by mixing an inorganic adsorbent and a heat resistant binder with an oxide catalyst.
CONSTITUTION: The powder of an oxide catalyst is obtained by calcining metallic oxalate and metallic hydroxide which are obtained by using both a soln. contg. metallic salt of La, Sr and Co, etc., and oxalic acid, mines and sodium hydroxide. Both an inorganic adsorbent such as acetylene black and sodium silicate and a heat resistant binder are mixed and kneaded with the powder at a prescribed rate and the mixture is molded and thereafter sufficiently dried and immersed into an ammonium chloride aq. soln. and sodium silicate is made to gel of SiO2 and the molded form is washed with water and thereafter heat- treated. Thereby offensive odor and harmful gas discharged at a time of heating and regeneration are little and the adsorption capacity is not lowered and the molded form can be used for a long period.
TACHIBANA KOICHI
KONDO SHIGEO
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